Recombinant Human IL-1 alpha/IL-1F1 Protein Best Seller

Catalog # 200-LA | R&D Systems, Inc. a Bio-Techne Brand
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Carrier Free
200-LA-002/CF
200-LA-010/CF
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With Carrier
200-LA-002
200-LA-010
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Key Product Details

Accession #

Q53QF9

Source

E. coli

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

E. coli-derived human IL-1 alpha/IL-1F1 protein
Ser113-Ala271

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ser113

Predicted Molecular Mass

18 kDa

Activity

Measured in a cell proliferation assay using D10.G4.1 mouse helper T cells. Symons, J.A. et al. (1987) in Lymphokines and Interferons, a Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 272.
The ED50 for this effect is 1‑6 pg/mL.

Scientific Data Images for Recombinant Human IL-1 alpha/IL-1F1 Protein

Recombinant Human IL-1 alpha/IL-1F1 Protein Bioactivity

Recombinant Human IL-1 alpha/IL-1F1 Protein Bioactivity

Recombinant Human IL-1 alpha/IL-1F1 (Catalog # 200-LA) stimulates cell proliferation of the D10.G4.1 mouse helper T cell line. The ED50 for this effect is 1-6 pg/mL.
Recombinant Human IL-1 alpha/IL-1F1 Protein SDS-PAGE

Recombinant Human IL-1 alpha/IL-1F1 Protein SDS-PAGE

1 μg/lane of Recombinant Human IL-1 alpha/IL-1F1 was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a single band at 18 kDa.

Formulation, Preparation and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 200-LA
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 10 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Carrier Free: 200-LA/CF
Formulation Supplied as a 0.2 μm filtered solution in PBS.
Shipping The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after opening.

Background: IL-1 alpha/IL-1F1

Interleukin 1 (IL-1) is a name that designates two proteins, IL-1 alpha and IL-1 beta, which are the products of distinct genes, but which show approximately 25% amino acid sequence identity and which recognize the same cell surface receptors. Although IL-1 production is generally considered to be a consequence of inflammation, recent evidence suggests that IL-1 is also temporarily upregulated during bone formation and the menstrual cycle and can be induced in response to nervous system stimulation. In response to classic stimuli produced by inflammatory agents, infections or microbial endotoxins, a dramatic increase in the production of IL-1 by macrophages and various other cells is seen. Cells in particular known to produce IL-1 include osteoblasts, monocytes, macrophages, keratinocytes, Kupffer cells, hepatocytes, thymic and salivary gland epithelium, Schwann cells, fibroblasts and glia (oligodendroglia, astrocytes and microglia).

IL-1 alpha and IL-1 beta are both synthesized as 31 kDa precursors that are subsequently cleaved into proteins with molecular weights of approximately 17,000 Da. Neither precursor contains a typical hydrophobic signal peptide sequence and most of the precursor form of IL-1 alpha remains in the cytosol of cells, although there is evidence for a membrane-bound form of the precursor form of IL-1 alpha. The IL-1 alpha precursor reportedly shows full biological activity in the EL-4 assay. Among various species, the amino acid sequence of mature IL-1 alpha is conserved 60% to 70% and human IL-1 has been found to be biologically active on murine cell lines. Both forms of IL-1 bind to the same receptors, designated type I and type II. Evidence suggests that only the type I receptor is capable of signal transduction and that the type II receptor may function as a decoy, binding IL-1 and thus preventing binding of IL-1 to the type I receptor.

Long Name

Interleukin 1 alpha

Alternate Names

BAF, IL-1A, IL-1F1, IL1, IL1 alpha, IL1A, IL1F1, LAF, LEM

Entrez Gene IDs

3552 (Human); 16175 (Mouse); 24493 (Rat); 397094 (Porcine); 101926546 (Cynomolgus Monkey)

Gene Symbol

IL1A

UniProt

Q53QF9

Product Documents for Recombinant Human IL-1 alpha/IL-1F1 Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS 200-LA (with carrier)
Download SDS 200-LA/CF (carrier free)

Product Specific Notices for Recombinant Human IL-1 alpha/IL-1F1 Protein

For research use only

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